12591969 has 8 divisors (see below), whose sum is σ = 18080832. Its totient is φ = 7748880.

The previous prime is 12591959. The next prime is 12591977. The reversal of 12591969 is 96919521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12591969 - 2⁵ = 12591937 is a prime.

It is a super-2 number, since 2×12591969² = 317115366593922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12591969.

It is not an unprimeable number, because it can be changed into a prime (12591919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161397 + ... + 161474.

It is an arithmetic number, because the mean of its divisors is an integer number (2260104).

Almost surely, 2^12591969 is an apocalyptic number.

It is an amenable number.

12591969 is a deficient number, since it is larger than the sum of its proper divisors (5488863).

12591969 is a wasteful number, since it uses less digits than its factorization.

12591969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322887.

The product of its digits is 43740, while the sum is 42.

The square root of 12591969 is about 3548.5164505748. The cubic root of 12591969 is about 232.6472278277.

The spelling of 12591969 in words is "twelve million, five hundred ninety-one thousand, nine hundred sixty-nine".